Mail Restrict Send Button

This module adds a simple access control on top of Odoo's chatter (the message and activity area found on records such as sales orders, invoices and contacts).

It creates a new security group called "Allowed", placed under the "Send Message" privilege in the Productivity category. Administrators can assign this group to the users who should be allowed to post messages.

When a user opens a record, the chatter checks whether that user belongs to the "Allowed" group. If the user is not in the group, the Send Message button is simply not displayed in the chatter. Users who are in the group see the button as usual and can send messages normally.

The change is purely visual on the screen: the button is hidden, and no new menu, report or scheduled action is added. The module depends on the standard Mail application and only affects the chatter interface. It does not change how messages are stored or how notifications are sent; it only controls whether the send button is shown to a given user.